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Unbound Plasma, Total Plasma, and Whole-Blood Tacrolimus Pharmacokinetics Early After Thoracic Organ Transplantation.


ABSTRACT: BACKGROUND AND OBJECTIVE:Therapeutic drug monitoring of tacrolimus whole-blood concentrations is standard care in thoracic organ transplantation. Nevertheless, toxicity may appear with alleged therapeutic concentrations possibly related to variability in unbound concentrations. However, pharmacokinetic data on unbound concentrations are not available. The objective of this study was to quantify the pharmacokinetics of whole-blood, total, and unbound plasma tacrolimus in patients early after heart and lung transplantation. METHODS:Twelve-hour tacrolimus whole-blood, total, and unbound plasma concentrations of 30 thoracic organ recipients were analyzed with high-performance liquid chromatography-tandem mass spectrometry directly after transplantation. Pharmacokinetic modeling was performed using non-linear mixed-effects modeling. RESULTS:Plasma concentration was?

SUBMITTER: Sikma MA 

PROVIDER: S-EPMC7292814 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Unbound Plasma, Total Plasma, and Whole-Blood Tacrolimus Pharmacokinetics Early After Thoracic Organ Transplantation.

Sikma Maaike A MA   Van Maarseveen Erik M EM   Hunault Claudine C CC   Moreno Javier M JM   Van de Graaf Ed A EA   Kirkels Johannes H JH   Verhaar Marianne C MC   Grutters Jan C JC   Kesecioglu Jozef J   De Lange Dylan W DW   Huitema Alwin D R ADR  

Clinical pharmacokinetics 20200601 6


<h4>Background and objective</h4>Therapeutic drug monitoring of tacrolimus whole-blood concentrations is standard care in thoracic organ transplantation. Nevertheless, toxicity may appear with alleged therapeutic concentrations possibly related to variability in unbound concentrations. However, pharmacokinetic data on unbound concentrations are not available. The objective of this study was to quantify the pharmacokinetics of whole-blood, total, and unbound plasma tacrolimus in patients early af  ...[more]

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